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Helms G
Analysis of 1.5 Tesla proton MR spectra of human brain
using LCModel and an imported basis set.
Magn Reson Imaging 1999;
17:1211-1218.
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Helms G
A precise and user-independent quantification
technique for regional comparison of single volume proton MR
spectroscopy of the human brain
NMR Biomed 2000; 13:398-406.
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Savic I,
Lekvall Å, Greitz D, Helms G
MR spectroscopy shows
reduced frontal lobe
concentrations of N-acetyl aspartate in patients with juvenile
myoclonic epilepsy
Epilepsia
2000; 41:290-296.
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Helms G, Stawiarz L, Kivisäkk P, Link H
Regression analysis of metabolite concentrations
estimated from localized proton MR spectra of active and chronic
multiple sclerosis lesions
Magn Reson Med 2000; 43:102-110.
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Helms G, Piringer A
Restoration of motion-related signal loss and
line-shape deterioration of proton MR spectra using the residual water
as intrinsic reference
Magn Reson Med 2001; 46:395-400.
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Helms G
Volume correction for edema in single volume proton MR
spectroscopy of contrast enhancing multiple sclerosis lesions
Magn Reson Med 2001; 46:256-263.
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Helms G, Piringer A
Magnetization transfer of water T2 relaxation
components in human brain: implications for T2-based segmentation of
spectroscopic volumes
Magn Reson Imaging 2001; 19:803-811.
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Helms G
T2-based
segmentation of periventricular volumes for quantification of proton
magnetic resonance spectra of multiple sclerosis lesions
MAGMA 2003; 16:10-16.
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Savic I, Österman Y, Helms G
MRS
shows syndrome differentiated metabolite changes in human-generalized
epilepsies
NeuroImage 2004 21:163–172.
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Helms G, Ciumas C, Kyaga S, Savic I
Increased thalamus levels of Glx
in patients with idiopathic generalized
epilepsies
J Neurol Neurosurg Psychiatry in
press.
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